JPS559671A - Manufacturing of magnetic powder - Google Patents
Manufacturing of magnetic powderInfo
- Publication number
- JPS559671A JPS559671A JP8332078A JP8332078A JPS559671A JP S559671 A JPS559671 A JP S559671A JP 8332078 A JP8332078 A JP 8332078A JP 8332078 A JP8332078 A JP 8332078A JP S559671 A JPS559671 A JP S559671A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic powder
- zinc compound
- ammonium chloride
- water
- organic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000006247 magnetic powder Substances 0.000 title abstract 7
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 6
- 150000003752 zinc compounds Chemical class 0.000 abstract 6
- 235000019270 ammonium chloride Nutrition 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 2
- 239000006185 dispersion Substances 0.000 abstract 2
- 239000003960 organic solvent Substances 0.000 abstract 2
- 239000006249 magnetic particle Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000011592 zinc chloride Substances 0.000 abstract 1
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 abstract 1
Landscapes
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paints Or Removers (AREA)
- Powder Metallurgy (AREA)
- Hard Magnetic Materials (AREA)
Abstract
PURPOSE: To manufacture magnetic powder having improved dispersibility and dispersion stability in organic binders, by immersing magnetic powder in an aqueous solution of a zinc compound and ammonium chloride, and washing with water.
CONSTITUTION: 100 parts by weight of magnetic powder is treated with an aqueous solution containing ≥0.5 part, pref. 1W5 parts of a zinc compound such as ZnCl2, ZnO, etc., and a proper amount of ammonium chloride, and washed with water. The zinc compound is adsorbed to the surface of the magnetic particles. The weight ratio of the ammonium chloride to the zinc compound is pref. ≥0.5. Since zinc compounds are easily soluble to water and compatible with organic solvents, the zinc compound adsorbed to the surface of the magnetic powder improves the affinity between the magnetic powder and the organic solvent, thereby improving the dispersibility and the dispersion stability of the magnetic powder in the organic binder.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8332078A JPS559671A (en) | 1978-07-07 | 1978-07-07 | Manufacturing of magnetic powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8332078A JPS559671A (en) | 1978-07-07 | 1978-07-07 | Manufacturing of magnetic powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS559671A true JPS559671A (en) | 1980-01-23 |
Family
ID=13799126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8332078A Pending JPS559671A (en) | 1978-07-07 | 1978-07-07 | Manufacturing of magnetic powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS559671A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819733A (en) * | 1981-07-28 | 1983-02-04 | Toshiba Corp | Magnetic recording medium and its manufacture |
| US4781981A (en) * | 1986-12-19 | 1988-11-01 | Toda Kogyo Corp. | Plate-like magnetoplumbite ferrite particles for magnetic recording and process for producing the same |
-
1978
- 1978-07-07 JP JP8332078A patent/JPS559671A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819733A (en) * | 1981-07-28 | 1983-02-04 | Toshiba Corp | Magnetic recording medium and its manufacture |
| JPS6250889B2 (en) * | 1981-07-28 | 1987-10-27 | Tokyo Shibaura Electric Co | |
| US4781981A (en) * | 1986-12-19 | 1988-11-01 | Toda Kogyo Corp. | Plate-like magnetoplumbite ferrite particles for magnetic recording and process for producing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR890007125A (en) | α-type titanyl phthalocyanine composition, its manufacturing method and an electrophotographic photosensitive member using the same | |
| JPS5744227A (en) | Magnetic recording medium | |
| JPS559671A (en) | Manufacturing of magnetic powder | |
| DK0589375T3 (en) | The micronutrient preparations | |
| ES8802289A1 (en) | A method of manufacturing a patterned, coloured surface on an object as well as an object manufactured by the method and a paint for carrying out the method. | |
| DE3679884D1 (en) | FERRITE-CERAMIC COMPOSITE POWDER AND METHOD FOR THE PRODUCTION THEREOF. | |
| JPS5661035A (en) | Magnetic recording medium | |
| JPS5269898A (en) | Production of phosphate pigment | |
| JPS54106895A (en) | Ferromagnetic powder | |
| JPS5583209A (en) | Ferromagnetic powder and preparing the same | |
| JPS54124297A (en) | Ferromagnetic powder | |
| JPS5633467A (en) | Copper coating method | |
| JPS54122103A (en) | Magnetic recording medium and production of the same | |
| JPS5579871A (en) | Metal covering method for non-conductive substance | |
| JPS5594968A (en) | Preparing red iron oxide pigment | |
| JPS54162741A (en) | Thermosetting resin composition | |
| JPS5230852A (en) | Method for preparing reinforcing fillers | |
| JPS5572007A (en) | Magnetic material | |
| JPS51142028A (en) | Thermosetting type water-soluble coating composition | |
| JPS54147814A (en) | Magnetic recording medium | |
| JPS547310A (en) | Magnetic coating composition | |
| JPS5662905A (en) | Metal magnetic powder and its treatment | |
| JPS5662904A (en) | Metal magnetic powder and its treatment | |
| JPS54147812A (en) | Magnetic recording medium | |
| JPS5792525A (en) | Preparation of cadmium sulfide |